#include <iostream>

int main(int argc, char const *argv[])
{
    std::cout << "Hello there.\n";
    std::cout << "Here is 5:" << 5 << "\n";
    std::cout << "The mainpulator std::endl";
    std::cout << "writes a new line to the screen.";
    std::cout << std::endl;
    std::cout << "Here is the sum of 8 and 5:\t";
    std::cout << 8+5 << std::endl;
    std::cout << "Here's a fraction:\t\t";
    std::cout << (float)5/8 << std::endl;
    std::cout << "And a very big number:\t";
    std::cout << (double) 7000 * 7000 << std::endl;
    std::cout << "Don't forget to replace David Hu";
    std::cout << "with your name...\n";
    std::cout << "David Hu is a C++ programmer and Embeded engineer!\n";

    return 0 ;
}
